Free tool
Convert KMZ to KML
Google Earth saved your work as KMZ by default and you need the raw KML inside? A KMZ is just a ZIP archive wrapping a doc.kml, and the tool unpacks it to hand you a clean text KML any GIS tool can open — no unzip utility and no upload.
Format converter
FAQ
Upload the KMZ file in the tool above and a summary of its contents appears (points/lines/polygons and attributes). Pick the coordinate system if the file carries none, then hit “Convert & download” — the KML file saves straight to your device.
All formats and directions (8 formats in and out) live in the full surveying file format converter.